Kriss USA Defiance Front Flip-Up Sight — Low-Profile Steel, Black (Model DAFSBL00 / UPC 810237026519)
Round out your optic setup with a rugged, low-profile backup: the Kriss USA Defiance Front Flip-Up Sight (DAFSBL00) is a precision-machined steel front sight engineered to be a reliable iron-sight backup for AR-15 platforms. Designed to work seamlessly with low-profile rear sights and modern red-dot optics, the Defiance front sight provides quick target acquisition, rock-solid zero retention, and the durability to withstand heavy use in tactical, training, and field environments.
Built for real-world reliability
The Defiance front flip-up sight combines a low silhouette for co-witness compatibility with a robust steel construction that resists deformation and maintains alignment under repeated recoil. When stowed, it stays tucked under your optic footprint to preserve cheek weld and sight picture; when needed, it deploys instantly and locks into place with a positive detent for repeatable accuracy.
Kriss USA engineered the Defiance series to meet the demands of professional users and serious enthusiasts who want a dependable mechanical back-up to electronic optics.
Key Features & Benefits
Model: DAFSBL00
UPC: 810237026519
Construction: Heat-treated steel body for superior strength and longevity compared with polymer alternatives.
Finish: Matte black corrosion-resistant coating to reduce glare and blend with black rails/slides.
Low-Profile Design: Sits low on the rail when stowed so it won’t obstruct red-dot or holographic optics.
Quick-Deploy Flip Mechanism: Spring-assisted or detent-assisted flip up for fast, one-hand deployment under stress.
Secure Locking: Positive locking detent holds the sight rigidly in the deployed position to preserve zero.
Compatibility: Fits standard Picatinny / MIL-STD-1913 rails — ideal for AR-15, AR-10 and other 1913-rail platforms.
Aperture/Blade Options: Precision sight post engineered for clear front-sight acquisition and co-witness setups.
Durability: Steel construction resists cracking, deformation, and wear from repeated stow/deploy cycles and rough handling.
Low-Weight Profile: Designed to add minimal weight while maximizing rigidity and reliability.
Performance & Use Cases
The Kriss Defiance front sight is perfect for shooters who primarily use optics but require a fast, robust iron backup in case of optic failure, battery loss, or damage. Common applications include:
Optic backup: Low-profile when stowed, clear sight picture when deployed — ideal behind red dots and magnified optics.
Tactical / Duty rifles: Durable steel construction meets the needs of patrol, security, and professional users.
Competition & Training: Reliable, repeatable aiming reference for drills where optics may be swapped or disabled.
Hunting & Field: Rugged enough for rough field use while keeping a compact profile on the rail.
Design & Engineering Notes
Low obstruction: The sight’s low stowed height maintains cheek weld and minimizes interference with micro-red dots and holographic sights.
Positive detent: The deployed detent prevents wobble and keeps the post in the same orientation shot after shot.
Precision post: The sight post is cut and centered to deliver a consistent point-of-impact relative to co-witnessed optics when properly zeroed.
Serviceable: Simple, user-serviceable components — easy to clean and inspect as part of regular maintenance.
Installation & Adjustment (High-Level)
Mounting: Install on any standard Picatinny rail segment. Position the sight forward of your optic as required for the desired co-witness (absolute or lower 1/3).
Securing: Tighten the sight’s clamp or mounting screw to the rail per the manufacturer torque recommendations—ensure a snug, wobble-free fit.
Deploy & Zero: Flip the sight up, align with your front post or optic, and perform a live-fire or bore-sight zero to establish precise point of aim.
Maintenance: Periodically check mounting hardware and detent for wear; clean grit from the flip hinge and apply a light film of corrosion inhibitor if operating in harsh environments.
For precise torque specs, sight heights, or specialized co-witness setups consult Kriss USA documentation or a qualified armorer.
Durability & Care
Finish care: Wipe with a dry or lightly oiled cloth after exposure to sweat, salt, or dirt to protect the matte finish.
Inspection: Regularly inspect the hinge, detent, and mounting clamp for signs of wear; replace if the locking detent loses tension.
Compatibility check: Confirm rail alignment and clearance with your optic’s footprint prior to final torque to avoid interference.
Technical Specifications (At-a-Glance)
Manufacturer: Kriss USA
Model: Defiance Front Flip-Up Sight (DAFSBL00)
UPC: 810237026519
Material: Heat-treated steel
Finish: Matte black corrosion-resistant coating
Mount: Picatinny / MIL-STD-1913 compatible
Style: Low-profile flip-up front sight / post
Deployment: Spring/detent assisted flip with positive lock
Weight: Lightweight for a steel sight (adds minimal mass)
Intended Use: Backup iron sight for AR-15, AR-10 and other 1913-rail firearms
Frequently Asked Questions (FAQ)
Q: Will this sight co-witness with my red dot?
A: Yes — when positioned correctly the Defiance front sight is designed to be low enough when stowed to allow lower-1/3 or absolute co-witness with many micro red-dot optics. Always confirm clearance and sight picture on your specific optic before use.
Q: Is this more durable than polymer flip sights?
A: Yes — constructed from heat-treated steel, the Defiance front sight offers superior resistance to cracking and wear compared with most polymer alternatives.
Q: How do I zero it?
A: Mount and secure the sight, deploy the sight post, then bore-sight or live-fire adjust to achieve the desired point of impact. Use the rear sight or your optic as the reference during zeroing.
SEO-Friendly Product Summary
The Kriss USA Defiance Front Flip-Up Sight (Model DAFSBL00 / UPC 810237026519) is a low-profile steel front backup sight for AR-platform rifles. With a matte black finish, positive detent lock, and Picatinny mounting compatibility, this rugged flip-up sight provides a reliable, repeatable iron-sight backup for optics-equipped rifles used in tactical, training, and hunting environments.
Equip your rifle with a dependable, low-profile mechanical backup — the Kriss Defiance Front Flip-Up Sight brings steel-forged durability, fast deployment, and rock-solid zero retention to any Picatinny-equipped platform.
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